WARCO Full Synthetic SAE 5W-40 HD Motor Oil


WARCO CK-4 Full Synthetic Heavy Duty SAE 5W-40 Diesel Engine Oil is a high-performance engine oil designed to meet 2021 and prior model year on-highway and Tier 4 exhaust emission standards.


1 US Qt
1 US Gal

It provides enhanced protection against wear, oxidation, shear viscosity loss, low and high temperature degradation, soot related thickening as well as protection against particulate filter blocking and catalyst poisoning. It is recommended for naturally aspirated, turbocharged or supercharged diesel, gasoline, or propane truck, sport utility vehicle, passenger car and other mobile or stationary engines.

WARCO CK-4 Full Synthetic Heavy Duty SAE 5W-40 Diesel Engine Oil meets or exceeds CK-4 / SN service classifications and is compatible with all prior categories. It has been field tested to be comparable to most American, Asian and European manufacturers’ standards including ACEA E9, E7, E4, E2, Chrysler/Fiat MS-1092, Ford WSS-M2C171-E, WSS-M2C171-F1, Renault RLD-4, Caterpillar, Detroit Diesel, Allison C-4, MACK, and many other OEM’s specifications where a full synthetic SAE 5W-40 CK-4 engine oil is recommended.


FIELD TESTED: ACEA E9, E7, E4, E2, Chrysler/Fiat MS-1092,Ford WSS-M2C171-E, WSS-M2C171-F1, 

Renault RLD-4, Caterpillar, Detroit Diesel, Allison C-4, MACK

• For diesel and gasoline engines

• Exceeds CK-4 / SN service classification

• Helps optimize fuel economy

• Full synthetic motor oil outperforms conventional oil

• Maximum engine cleanliness and protection

• Protection against soot-related viscosity increase


QUART FP540FSWC012CK 818265025634
GALLON  FP540FSWC41GCK 818265025603
5-QUART - -
5 GAL - -
55 GAL  - -
1-Liter - -
4-Liter - -
5-Liter  - -